Mold.



F. J. FRIESE 611. E. GILBERT.

MOLD.

APPLICATION FlLED APR.I3. 1912.

m w m M? M 16; am 2% F m 51 11. l ,1 & W 1 4Q FRANK J. FRIESE} AND JOHN OF MISSOURI.

E. GILBERT, 0F ST. LOUI$,

irr'ssonnr, assronons no iurssouar, a oonroaarron Specification of Letters Patent.

Patented Dec. '2, rein.

Application filed llprll 13, 1912. Serial No. 690,615

To all whom it may concern:

Be it known that we, FRANK J. Fnrnsn and JOHN E. GILBERT, V citizens of the United States of America, residing in the city of St. Louis and State of Missouri, have invented certain new and useful Improvements in Molds, of which the following is a specification.

This invention relates-to molds, preferably metallic ones, for making journal bearings or brasses; and has for its primary object means for preventing cold shot in the lower part of molds.

Another object is to provide means whereby the point of contact of flowing molten metal against the inner portion of the mold is always changing.

Another object is to prevent deterioration of the inner walls of the mold.

A still further object is to provide a mold in which the consistency of the molded metal is not changed during the molding operation.

Other and further objects will appear in the specification, and be specifically pointed out in the appended claims, reference being had to the accompanying drawings, exemplifying the invention, and in'which,

Figure 1 is a plan view of this improved mol Fig. 2 is a section taken approni-- mately on the curved line ll-Jl, Fig. 1. Fig. 3 is a horizontal section on the line lH-HI, Fig. 2. Fig. 4: is a perspective View of a journal bearing immediately after its removal from the mold.

1 designates the drag and base of a sectional mold, having hinge members 2 integral therewith. The sectional copes 3 and 4 carry hinge members 5, and are hingingly secured to the hinge members tles 6. Said cope sections 3 andl are locked together by a clamp 7 engaging the lugs El,

said lugs 8 bein integral with the cope sections 3 and i. is shown in Fig. 3, the casting or molding chamber 9 is formed with 1, and the in the secthe inner recess 10 in the dra outer recesses 11 and 12 forme tional copes 3 and 4.

Located on one end her 9, and practically said casting chamber, is an-ingate 13'having communication to the molding chamber 9 through the vertical inlet 14, said inlet being the approximate depth or length of the molding chamber 9. Thelower end of the of the casting cham- 2 by the pin-- in alinement with ingate 13 is curved inwardly to the mold chamber 9, as shown at 15. The ingate 13, as shown, is in the cope 4, and when in the posltlon shown in Fig. 3, in which the mold is ready for pouring, has a facing against a portion of the drag, as shown at 16.

Theriser 17 is located at the center of the mold, being formed by the recess 18 in the drag and the recesses 19 formed in the sectional copes 3 and Heretofore, in the pouring of bearings, especially brasses, cold shot forms in the bottom" of said brasses by reason of the initial pour becoming chilled and settling at the bottom of the mold. This improvement, which lies especially in the ingate, entirely overcomes this condition by reason of the ingate leading to the bottom of the mold. The initial pouring will be washed up from the bottom of the mold by reason of the onrush oi the continuous pouring. And also by reason of the vertical inlet 8X- tending from top to bottom, there will be practically an unbroken flowing current taking place entirely through the mold until i the pouring is completed. Then, the molded mass proper will cool in unison, making a good clear bearing, and no cold shot. Also, because the vertical inlet 14, leading from the ingate 13 into the mold chamber, is located at one end of the mold chamber, and in alinement therefrom, the spot heating trouble is overcome. Inasmuch as the inlet 14- is a continuous opening, and is in the direct line with the chamber 9, the flowing point of the molten metal, when entering the mold chamber, is always changing. And, furthermore, as the mold is becoming filled with. the molten metal, there will be a rise or moving ot the entering point of the molten metal into the mold proper, thus leaving no one set pouring point of the molten metal striking the mold during the operation. This changing of the flowing point of the molten metal is very essential, as when the molten metal strikes the inner portion of the mold at one continuous point, that portion of the mold expands greatly, making an ununiform expansion and contraction of the mold. Deterioration also takes placeby reason of the continued high heating of the one spot at which point the flowing metal on a es; the oldtypes of metallicmolds. And, d urthermore, the carbon, that is given at from metallic molds by this intense heat, enters and mingles with the molten metal, thereby making an inferior casting or brass.

Fig. 4c shows a bearing casting immediately after being removed from the mold, which indicates very clearly the location of the ingate in relation to one of the ends of the casting chamber.

That we claim is:

1. A mold comprising a mold chamber, an ingate leading to the bottom of said chamber, and a continuously formed vertical inlet passageway located between said ingate and said chamber adapted to establish a continuous communication from said ingate to said chamber throughout the depth of said chamber.

2. A mold comprising foldable sections, said sections when folded together adapted to form a mold chamber, said mold chamber having an ingate leading to the bottom thereof, a vertically arranged continuously open inlet passageway located between said ingate and said mold chamber, said vertical inlet being the length of the approximate depth of said mold chamber, and adapted to form means of continuous communication between said ingate and said mold chamber.

3. A mold composed of three sections, two of said sections being swingingly secured to said other section, said swinging sections when moved against said other sections forming a mold chamber, an ingate leading to the bottom of said mold chamber formed in one of said swinging sections, and a vertically arranged inlet passageway located between said ingate and one end of said mold chamber adapted to establish continuous communication between said ingate and said mold chamber throughout the depth of said mold chamber.

4. A mold composed of two matching sections forming a mold chamber, an ingate arranged adjacent to the mold chamber and extending to a point on a plane with the bottom of said mold chamber, a restricted passageway of the approximate length of the depth of said mold-chamber arranged between said ingate and said mold chamber, said restricted passageway adapted to establish communication between said ingate and said mold chamber throughout the approximate length of said ingate, substantially as specified.

In testimony signatures, this whereof, we have affixed our 3rd day of April, 1912.

FRANK J. FRIESE. JUHN E. GILBERT.

In the presence of- M. C. HAMMON, H. G. FLETCHER. 

